<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>表单收集_非受控组件</title>
</head>

<body>
    <div id="test"></div>
    <!-- 引入react核心库 -->
    <script type="text/javascript" src="../js/react.development.js"></script>
    <!-- 引入react-dom库 -->
    <script type="text/javascript" src="../js/react-dom.development.js"></script>
    <!-- 引入babel 转换jsx的库 -->
    <script type="text/javascript" src="../js/babel.min.js"></script>
    <!-- 引入PropType库  min没有警告-->
    <script type="text/javascript" src="../js/prop-types.js"></script>

    <script type="text/babel">/* 此处要写babel */
        // 创建组件
        class Demo extends React.Component {
            handleSubmit = (event) => {
                event.preventDefault();
                const { username, password } = this;
                alert(`用户名：${username.value} 密码：${password.value}`);

            }
            render() {
                return (
                    <form onSubmit={this.handleSubmit} action="http://www.atguigu.com">
                        用户名：<input ref={c => this.username = c} type="text" name="username" />
                        密码：<input ref={c => this.password = c} type="password" name="password" />
                        <button>登录</button>
                    </form>
                )
            }
        }

        const root = ReactDOM.createRoot(document.getElementById('test'));
        root.render(<Demo />);


    </script>
</body>

</html>